Adjustable block for book-trimming machines.



0. G. KLUGEL.

ADJUSTABLE BLOCK FOR BOOK TRIMMING MACHINES.

APPLICATION FILED SEPT. 25, 1911.

Patented Aug. 13, 1912.

Invenior,

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COLUMBIA PLANOGRAPH 60-, WASNINCN" UNITED STATES PATENT cr mes.

OSCAR Gr. KLUGEL, OF INDIANAPOLIS, INDIANA.

ADJUSTABLE BLOCK FOR BOOK-TRIMMING MACHINES.

To all whom it may concern:

Be it known that I, OSCAR G. KLUGEL, a citizen of the United States,residing at I11- dianapolis, in the county of Marion and State ofIndiana, have invented certain new and useful Improvements in AdjustableBlocks for Book-Trimming Machines, of which the following is aspecification.

This invention relates to improvements in clamping blocks to be usedwith paper cutting machines for holding books, pamphlets, and the like,comprising a plurality of sheets or leaves of paper, while said articlesare being trimmed at their outer edges in their finishing and bindingprocesses.

The articles to be trimmed are usually stacked on the bed-plate of thecutting machine, or on a cutting block on said bedplate, and under asuperimposed block, between which and the bed-plate the articles areclamped under heavy pressure. The paper edges to be cut project past thetop block in the paths of vertically moving knives, and in order to makea clean cut of the paper it is necessary that the top clamping blockcover the entire page or surface to be left, and extend quite to thecutting lines in the planes of travel of the knives. Be cause of thelack of uniformity in page-size in the manufactureof books and pamphletsthe clamping blocks arenot always of the right size, and it is a commonpractice to paste card-board strips on those edges of the blocks whichare short, to extend them. This expedient is not entirely satisfactorybecause, aside from the time and bother entailed in building out theedges of the blocks in this manner, the extensions thus constructed areless firm and solid, and frequently break off while in use.

The object of my invention is to provide a clamping block in a pluralityof separately removable pieces with convenient means for adding to orreducing the size of the block by increasing or lessening the number orsizes of the pieces.

The object also is to provide a built-up block which will be easy andconvenient to change, and which will be strong and substantial whencompleted, and which will be well adapted for the intended purpose.

I accomplish the objects of the invention by the mechanism illustratedin the accompanying drawing in which- Figure l, is a fragmentary View infront elevation of a paper cutter with my inven- Specification ofLetters Patent.

Application filed September 25, 1911.

Patented Aug. 13, 1912. Serial No. 651,205.

tion installed. Fig. 2, is a top plan view of my invention detached fromall of the paper cutting machine except the horizontal pressure platethereof, to which my device is bolted. Fig. 3, is a top planview of mybuilt-up clamping block with the pressure plate and equalizer plate ofFig. 2, removed. Fig. 1, is a vertical section on'the lines 4=-4 ofFigs. 2 and 3. Fig. 5, is a side elevation and partial vertical sectionon the line 5-5 of Fig. 2. Fig. 6, is a side elevation and Fig. 7 an endView of one of the removable pieces, commonly called furniture, used inbuildingout my clamping block, and Fig. 8

is a side elevation and Fig. 9, an end view of a removable piece orfurniture used in building the clamping block out in opposite directionfrom that wherein the furniture shown in Figs. 6 and 7 is used.

Like characters of reference indicate like parts throughout the severalviews of the drawing.

Referring to Fig. 1, of the drawing, 10 is the bed-plate of a papercutting machine, 11 vertical standards, 12 a vertically reciprocatingbar and 13 a pair of cutting knives suspended from the bar 12 by hangers14, whereby the knives 13 will be made to travel up and down in verticalplanes.

15 is a cutting block supported by the bedplate 10.

All of the above parts may be and are of any usual and well knownconstruction. 16 is a horizontal pressure plate which is carried by thevertical standards 17. These parts are also of usual construction andthe pressure plate 16 will be provided with any suitable and usual meansfor moving it toward the cutting block 15 with ample clamping force toproperly compress and hold the sheets of paper in book, pamphlet, orother form to be out. My invention is assembled between the pressureplate 16 and cutting block 15, so as to come in direct contact with thepaper, and it is secured to the underside of plate 16 by means ofsuitable bolts or screws 20. Plate 16 is provided with slots 21 for thepassage through the plate of bolts 20, the slots permit-ting anadjustment of bolts 20.

The pamphlets or books 23 are usually stacked upon the cutting block intwo piles with their backs toward each other, as shown in Fig. 1, whichpresents the edges properly on the outside of the piles for ready accessfor trimming, and by the use of two knives, as shown in Fig. 1, thesides and ends of the two piles of books will be trimmed in twooperations of said knives by the turning of cutting block 15 and the twopiles to bring the uncut edges under the knives.

The main or body portion of my clamping block will be in two separateand similar parts 26, and each of these body portions 26 will be builtonto at each end to increase the length of that block and will also bebuilt onto at its inner edge at two places, opposite the ends of theextended body, to increase the width of the latter.

The building on to increase the length and also the width of the bodyportions 26 will be by means of separate pieces or furniture 28 and 29which are provided in assortments of different widths which will permitof the selection of a piece of furniture of the requisite width tosecure the required change in dimension of the clamping block as awhole. The pieces 28 will. be clamped between body 26 and outsidemembers 30, by means of a pair of bolts 31, for each outside member,which are passed through suitable holes in said members and through thefurniture pieces 28, into threaded holes or sockets in the body 26. Theoutside members will be counter-sunk to let the heads of the bolts inbelow the outer edge of members 30 so as not to interfere with theaction of the knives in cutting against said edges, and in order toinsure unobstructed action of the cutting knives in passing the clampingblock, I prefer to bevel all of its outside edges upwardly and inwardlyas shown at The furniture pieces 28, outside members 30 and the bodymember 26 are tongued and grooved as shown at 33 to keep them alluniformly level and even when assembled. The openin s through thefurniture pieces 28 for the bolts which pass through their inner endsare longitudinal end slots 35 to enable the pieces to be assembled andremoved without withdrawing the bolts, and the openings near theiropposite ends for the passage of the other bolt 31 have slots leadinginto them from the upper edges of said furniture pieces, as best shownin Fig. 6, and the slots 36 meet the bolt holes, in a manner as shown,to form an offset or shoulder 37 which rests upon the bolt when thefurniture piece is in operative position and is .for the purpose ofholding said furniture piece in place, that is from dropping down bygravity, before the bolts 31 have been tightened. Au indent 38 in theopposite wall of slot 36 is required to permit the furniture piece to bedrawn out longitudinally a distance sufficient for the shoulder 37 toclear the bolt.

The upper and lower inner corners of furniture piece 28 are cut away orrounded in the manner shown in Fig. 6 to permit the piece 28 to swing ina vertical plane without locking against adjacent portions of thedevice.

The furniture piece 29 used to extend the width toward the middle of themachine, of my clamping block, are clamped between the body 26 and endextensions 28 and 30 and the members 10; and the members 10 and thefurniture pieces 29 are secured to body 26 and outside member 30 bybolts 11. The bolt holes in members 40 do not need to be countersunk asthe bolt heads may project without interfering with the cutting knives.To permit the furniture pieces 29 to be assembled without the completeremoval of bolts 41 openings for the latter in the form of slots 43extending in from the inner ends of pieces 29 will be provided, andthese slots will permit the furniture pieces .29 to be placed andwithdrawn by longitudinal movements of said pieces.

Both sides of the two-part clamping block will be made up of removablemembers in the manner as above described and they will then be joinedand covered by an equalizer plate 15 which overlies a major portion ofthe complete clamping block, thereby distributing the pressure andstrain over all parts of the composite structure. The horizontal plate16 of the main machine rests upon the equalizer plate 45 and the retain"ing bolts 20 pass down through pressure plate 16, equalizer plate 45,and enter the bodies 26, thereby uniting all said parts. Plates 16 andl5, and bodies 26 are provided with tongues and grooves 50, toadditionally position and hold said parts in proper operative relationto each other.

The enlargement or diminution in area of my improved clamping block bymeans of removable furniture pieces, is so appar ent that furtherdescription is deemed unnecessary.

- Having thus fully described my invention, what- 1 claim as new andwish to secure by Letters Patent is 1. A clamping block for papercutters comprising a body piece, a plurality of smaller pieces removablysecured to the ends and inner edges of said body, means for removablysecuring the smaller pieces to said body piece, the outer edges of thecomposite block thus formed being beveled.

2. A clamping block for paper cutters comprising a body piece, aplurality of smaller pieces removably secured to the ends and to theinner edges of said body, means for removably securing the smallerpieces to said body, and an equalizing plate covering the major portionof the composite block thus formed.

3. A clamping block for paper cutters, comprising a body piece, smallerpieces secured to the ends and inner edges of said body, bolts forsecuring said smaller pieces to said body the pieces at the ends of saidbody being countersunk to let the heads of their retaining bolts inbelow the surface, and a plurality of pieces between the body and saidsmaller pieces.

4. A clamping block for paper cutters comprising a body piece, aplurality of smaller pieces of different thicknesses, and bolts forsecuring said smaller pieces to said body to extend the dimensions ofthe latter, said smaller pieces having slots extending in from theiredges to permit the assembly and removal of said pieces without theremoval of the bolts.

5. A clamping block for paper cutters comprising a body piece aplurality of smaller pieces of different thicknesses, and

bolts for securing said smaller pieces to said body to extend thedimensions 01": the latter, said smaller pieces having slots extendingin from their edges to permit the assembly and removal of said pieceswithout the removal of the bolts, some of said slots having shoulders toengage on the bolts to hold the pieces from dropping before the boltsare tightened.

In witness whereof, I, have hereunto set my hand and seal atIndianapolis, Indiana, this, 5th day of September, A. D. one thousandnine hundred and eleven.

OSCAR Gr. KLUGEL. [1,. s] Witnesses J. A. MINTURN,

F. W. WOERNER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

